101022408 has 48 divisors (see below), whose sum is σ = 274095900. Its totient is φ = 33613440.

The previous prime is 101022391. The next prime is 101022413. The reversal of 101022408 is 804220101.

It can be written as a sum of positive squares in 2 ways, for example, as 92968164 + 8054244 = 9642^2 + 2838^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58258 + ... + 59966.

Almost surely, 2^101022408 is an apocalyptic number.

101022408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

101022408 is an abundant number, since it is smaller than the sum of its proper divisors (173073492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101022408 is a wasteful number, since it uses less digits than its factorization.

101022408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 101022408 is about 10050.9903989607. The cubic root of 101022408 is about 465.7353885865.

Adding to 101022408 its reverse (804220101), we get a palindrome (905242509).

The spelling of 101022408 in words is "one hundred one million, twenty-two thousand, four hundred eight".